PR5 v. Lithuanian SSR: X moves. This game, is unfortunately, unavailable - it is the only one of Karpov's games which did not appear in the Russian bulletins of this event.

2106 AK-Aivar Gipslis:

FR2 v. Latvian SSR:

Pirc

3 N-QB3 P-KN3 4B-KN5

Until the sharp variation, beginning with 4 P-B4 was worked out-the continuation 4 B-KN5 was reckoned to be the most active. There is a straightforward plan: White castles long and inaugurates a K-side pawn storm.

Ten to fifteen years ago the automatic reply to 4 B-KN5 was 4 . . . B-N2, but then it was found that it is most important to secure the defence of the d5 square at once, so that after 5 P-K5 PxP 6 PxP QxQ+ 7 RxQ N-N5 one need not fear a sudden attack by the white QN.

5 P-B4 gives better chances. Against the old plan chosen by Karpov there is a perfectly good antidote.